58. Length of Last Word

Given a string s consists of upper/lower-case alphabets and empty space characters ’ ', return the length of last word in the string.
If the last word does not exist, return 0.
Note: A word is defined as a character sequence consists of non-space characters only.
Example:
Input: “Hello World”
Output: 5

好吧，這個題很簡單，給一個字串，然後求出最後一個單詞的長度

public int lengthOfLastWord(String s){
        int len=0;
        for (int i =s.length()-1; i>0; i--) {
            if(' '==s.charAt(i)){
                if(len==0)continue;
                return len;
            }
            len++;
        }
        return len;
 

    }